FT77AB7059 and 7970 vs 7990

Hi, sorry if im a total noob and piss people off but I just want to learn. First I need help with hashcat gui, what do i put for "binary at the bottom?" also I am building a new rig and need help. Should I go with the 780ti's or titan?? Pls help.

P.S. What rack and mobo does this guy uses
http://hashcat.net/forum/thread-2798-pos...l#pid16627